If you area a software developer looking for your next gig, here area few sources for inspiration. I've organized this list into two main categories: paid and unpaid. The thinking behind this is that some developers would prefer to get paid while they learn about a particular technology or industry, others just want to find something cool to work on.
Demand Rush reminds me of a "reverse Patreon" where instead of you giving money towards a particular project, someone pays you a monthly subscription to complete their project.
Free Software Jobs is a job board where all jobs must relate to free software positions. In other words, if you are already doing some open source work, this might be a way to supplement your efforts.
Old Geek Jobs is designed for employers to know beforehand which applicants (35+) will apply, which makes those applicants feel comfortable applying.